LF Cast Chassis / Ferrite

Celestion
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OEM

CF0820M

CF0820M
CF0820M

Features


  • 8" ferrite woofer purpose-built for midrange applications
  • Delivers 250Wrms (AES standard) power handling and 98dB sensitivity
  • Finite element analysis optimised magnet assembly delivers remarkably low
    harmonic distortion and very high motor strength
  • Copper sleeved pole reduces inductive rise for improved HF performance
  • Smart chassis design minimises reflections back onto the cone, significantly reducing acoustic distortion
  • Intelligent heat management in both chassis and magnet assembly design offers increased output level

Frequency Response and Impedance Curves

Product Graph
  1. Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
  2. Continuous Power Handling is defined as 3dB greater than the AES rating.
  3. Measured on axis at 1W, 1m in 2π anechoic environment.
  4. Xmax derived from: (voice coil winding width-gap depth)/2.
  5. Small signal parameters measured after unit subjected to pre-conditioning signal.

General Specifications

Nominal diameter
200mm/8in
Power rating1
250Wrms
Continuous power rating2
500W
Nominal impedance
Sensitivity3
98dB
Frequency range
150-6000Hz
Voice coil diameter
50mm/2in
Chassis type
Cast aluminium
Magnet type
Ferrite
Magnet weight
1.3kg/45oz
Coil material
Copper clad aluminium
Former material
Glass fibre
Cone material
Treated paper
Surround material
Cloth-sealed
Suspension
Single
Xmax4
1.5mm/0.06in
Gap depth
8mm/0.31in
Voice coil winding width
11mm/0.43in

Small Signal Parameters

D
0.17m/6.69in
Fs
124.8Hz
Mms
21.3g/0.75oz
Qms
2.79
Qes
0.539
Qts
0.452
Re
5.42Ω
Vas
5.57lt/0.2ft3
BI
12.96Tm
Cms
0.076mm/N
Rms
5.984kg/s
Le (at 1kHz)
0.24mH

Mounting Information

Overall diameter
215mm/8.5in
Overall depth
113mm/4.45in
Cut-out diameter
187mm/7.4in
Mounting slot dimensions
7 x 5.6mm/0.28in x 0.22in
Number of mounting slots
8
Mounting PCD range
197-200mm/7.8-7.9in
Unit weight
3.4kg/7.5lb

Packed Dimensions & Weight

Multi pack size W x D x H
465mm x 455mm x 250mm
/18.3in x 17.9in x 9.8in
Multi pack weight
27.5kg/60lb